I agree. Only the strongest 90cc or bigger saws are really better off with an 8-pin rim, IMHO.
So if your running a 3/8x7 on a 261 arent you doin the same thing as .325x8 ?..seems like alot of guys run 3/8 on 261s and they never complain...the one you did for me rips with an 18" bar and .325x8