I threw the smaller freewheel on and it works! Still have to double check the NR but it's looking good. Works on large/large and the cage is only a little forward of normal. It's also a nice feeling combo, and will be able to handle decent incline. The NR isn't here yet, so it may be next weekend before I can install it. I also just found out I got another similar 600 freewheel on a wheelset I bought a couple of months ago. It went onto the International(Nishiki) which is becoming a slightly modernized late 80's 105 mixed with Cyclone M-II RD/FD and shifters.,,,,BD