Me too
The first solid roller cam I bought and installed in a customers 1958 392 (300 motor originally with dual AFB quads and adjustable rocker arms ) stock hemi boat motor in a 18 ft. flat bottom Stevens V drive. It had a solid lifter cam in it before and would rev a little over 6000 RPM in gear on the water according to the customer, not so with the new Sig Erson solid roller race boat camshaft
It wouldn't rev past 3000 RPM with that new cam install straight up dot to dot in the water in gear
It revved like crazy in the boat out of the water
I had my wife take that cam back to Sig Erson three times to have them check it, they swore up and down it was okay I had to wait 5 weeks for them to grind that cam as it was not a standard shelf cam they stock at their factory back then in 1971
They where not real helpful on solving the problem as long as I dealt with Sig Erson younger brother Babe Erson
I had that motor in and out of the boat fives times and apart before finding out that the cam had been ground 10 degrees retarded
I learned that from one of their older techs on the next to the last call to them when he taught me how to degree the cam on the lobe centers, it was a real eye opener
They swore it wasn't their special ground expensive brand new cam shaft, it had to be the timing set or the crankshaft key way being ground in the wrong location and so on and on.
They ended up giving me a set of offset cam and crankshaft keyways to get it installed where the lobe centers should have been instead of replacing it with another new one ground properly
It was off on the cam card on the lobes a little bit, 2 to 5 degrees at .020 checking it on both intake and exhaust lobes so that should have been a good indicator it was ground wrong from day one to me
That was my first experience with a solid roller cam and my last time I bought any Sig Erson products
I have learned since then most problems with engines or with other things, end up helping me become better