Originally Posted by
Steve_sr
Well, I didn't find any spacing differences and didn't even have to tweak the FD. The recent incident occurred because I tried to fix something that wasn't broken!
The 46/30 rings (from a 600 crankset) will mount correctly on the 810 cranks. The only issue I had was that the chain catcher pin had to be shortened. Shimano put 2 scribe (cut) marks on the pin so these same rings must be used elsewhere.
I think you have quickly realized why turning to these forums for advice is an effort of futility. The usual armchair experts quickly weigh in with opinions without any real experience or practical common sense. For example; I have this bird which has webbed feet, a bill and makes a quacking sound. Responses would start with, you sure it’s not Albatross, how about a Loon, I have seen Penguins that fit that description!
Hope your problem is fixed and good luck.