My Dura Ace 9-speed Flight Deck shifters apparently have worn gears and my lbs says that's why my shifts aren't clean. The bike shop says the shifters can't be rebuilt because they're not designed so you can just replace the internal gears. I hate to throw them away. Aren't there some parts--rubber covers, clamp, or other parts--that can be used? If so, what's a fair price if I sell the shifters on ebay? Other than worn gears the shifters are in good shape.

Get a second opinion. Have you tried soaking the shifters in WD-40, or just blasting the internals without disassembling?

How many miles do you have on these shifters? I assumed you changed the chain already, since that is the best way to improve slow shifting.

I am also assuming your shifters have been adjusted correctly by a competent person.

The shifters came used with the bike. I don't know how old they are. The bike shop adjusted everything else, including new chain, but the shifts are still not accurate. They said that the only thing that will fix it are new shifters. I feel it's a good shop and trust their judgement. I've decided to swap out my entire 9-speed system for the 10-speed DA 7800s. May seem silly, but I'm committed to the idea. Any idea if there's any worth to the old shifters? Thanks.

The shifters came used with the bike. I don't know how old they are. The bike shop adjusted everything else, including new chain, but the shifts are still not accurate. They said that the only thing that will fix it are new shifters. I feel it's a good shop and trust their judgement. I've decided to swap out my entire 9-speed system for the 10-speed DA 7800s. May seem silly, but I'm committed to the idea. Any idea if there's any worth to the old shifters? Thanks.

You should re-read 53T's post. Often, flushing out the shifters with WD-40, TriFlow, etc. will bring them back to life. Likewise, installing new cables/casings is sometimes curative. Even checking the hoods to be sure they are not interfering with the cables can sometimes fix things. Do these things first, THEN worry about replacement.

The shifters came used with the bike. I don't know how old they are. The bike shop adjusted everything else, including new chain, but the shifts are still not accurate. They said that the only thing that will fix it are new shifters. I feel it's a good shop and trust their judgement. I've decided to swap out my entire 9-speed system for the 10-speed DA 7800s. May seem silly, but I'm committed to the idea. Any idea if there's any worth to the old shifters? Thanks.

I sold some questionable DA 9spd shifters on eBay for about $75. This was a full disclosure listing and I said in it that they may only be good as brake levers.

The shifters came used with the bike. I don't know how old they are. The bike shop adjusted everything else, including new chain, but the shifts are still not accurate. They said that the only thing that will fix it are new shifters. I feel it's a good shop and trust their judgement. I've decided to swap out my entire 9-speed system for the 10-speed DA 7800s. May seem silly, but I'm committed to the idea. Any idea if there's any worth to the old shifters? Thanks.
Shop is correct in that they are not designed to be rebuilt.

Believe shop is NOT correct in blaiming bad shifting on the shifters. In my experience they either shift or the don't. Poor shifting is always something else.

They do sell on eBay. Just list them as 'for parts' and start the bid at $0.99 (cheapest listing cost anyway) and take what you get.

TF