Police 1000 spongy shifter

So I have a kz1000p and had a little accident, nothing too serious. I have a kz specialist repair it, and I get it back, and it seems like the shifting is spongy now. It used to be very crisp, where you could know right away that it shifted from the physical clunk you could feel. Now it just shifts and it doesn't give me feedback about whether I'm in first or fifth. Trying to shift up from fifth feels the same as sitting up from any other gear and vice versa for first and shifting down . The only indication I have for shifting is rpm or the clunk from going from neutral to first.

What's could be going on? I know the heel toe shifter was replaced... But that doesn't seem like it's be the cause.

Check the linkage. There are a lot of places where there can be slop. It might just be loose. Also check the alignment. The shifter has to be a certain distance from the floorboard front and back.

Well I reported it to the mechanic that I had working on the bike after the accident. He did something to the shifter. That made it worse. I was out and about and it suddenly stopped letting me up shift without stomping it. That eventually knocked something loose on the linkage, and now it's dark and I can't see well enough to see if I can fix it.

He did say the teeth on the shifter are smoothed down. The thing is, the new shifter came with its own linkage. If I can get the bike fixed enough to get it down to the shop (currently it's in 3rd gear) I can likely get the old linkage and use it until the NOS linkage that we bought yesterday gets in.

(edit)

I fixed the problem myself... I switched to the old linkage, which had better teeth to grab the shift rod, and adjusted the rod that links the pedals to that. It's shifting a lot better now, just like I've been used to.