501, 350 old berg top ends

Hey this is my first post, I'v done a bunch of reading on other peoples problems, and now I'm looking for a little Berg help. I have a collection of 3 501 motors (91, 94, 2001) and a 350 (91), as well as a parts 350 motor. I got the 2001 with a broken cam follower bearing and i'd like to get it going again. The bearing on the exhaust rocker is totally gone, and the exhaust lobe on the cam is really beat up. Intake rocker bearing feels terrible, but is still in tact at least. Parts at my disposal include a complete 1991 501 and an old (year unknown) 350 cam with associated rockers.

Question #1: besides autodecompression, are the 2001 cam and rockers compatible with the earlier (91) 501 and or 350? I think I can live with no autodecompression. as a side note, the cam cutout for autodecompression seems like a weak link since the bearing needs to drive over the half width area all the time. do people typically see bearing failure on the exhaust side?

Question #2: did the 350s get a different cam than the 501s? I'd rather not pull apart an almost complete 501 motor to steal the cam and rockers when I have a junk 350 already pulled apart (the cam and rockers from the 350 look to be in great shape).

I have looked at husabergforce.com but the parts manual lacked adequate information for me to figure out these questions. Any insight would be greatly appreciated. I do actually have 2 running bikes now, but i'm dying to get the 2001 going as well.
Sam

Thanks Taffy,
Looking at 501 and 350 heads apart, it is clear the 350 rockers and cam have different dimensions. The valves are farther apart on the 501, so the rockers cant be swapped.

What year did they add autodecompression if im looking for a used 501 cam that has it? at this point i suspect the bike is a 00 since it has a new frame and old motor. VIN code says its a 2000. the DMV i guess thinks its an 01...Since I dont want to pull apart a complete 501, I think I am in the market for a cam and rockers if anyone is parting a top end.

I have never used a motor with autodecompression, how much do you guys like it? a 501 is hard to start no question, but I tolerate it since its so much more powerful than the 350. the 350 is so easy to start....

I was referring to the cam autodecompression, all my bikes have the kick and hand operated decomp. Does the decompression on the cam make a big improvement over the kick starter and hand lever? I dont have e-start, so i dont need cam decompression for that.

On my running bikes, the 501 needs carb adjusting for sure to start hot nicely, jetting is close on the whole but not great. I have read on here about carb adjustments for hot start so im working on that (although i need choke to hot start, so I must be too lean, which seems odd based on what I read). On the topic of carbs, the bikes I have came with 38mm Dellorto PHM carbs, both the 350 and the 501. before i get into optimizing a carb for the 501, is the 38 suitable or should I be running a bigger carb?