Thanks for the reply's.
I thought about fly cutting them tomorrow (we have a machine shop at work), but I don't want to weaken them at all since I am turning this motor 7200rpm.
If I go with another pair I want to be certain that they will clear because I dropped $200 on these. I can make a call tomorrow to Dart and see if they can recommend some.
Is anybody using some 1.6 rockers on a 1.550 o.d. spring?