If the RPM or spring load is high enough, a roller tip is going to help somewhat, but don't expect any power from it.
IMHO a rollerized fulcrum is not only not cost-effective, it's another bit of failure waiting to happen (very dirt sensitive).
You're also going to be choosing between going all the way to a shaft conversion (SS) or a stud girdle if high-speed stability is factor - the stud system becomes a bit expensive when you don't use any of the original parts.
There are no non-adjustable stud mounted rockers, so that's a long list.
Brittle aluminum? Really? I wonder if Jesel, T&D is aware of that?
I agree that for long mileage stainless is a better product, and the investment-cast is an excellent value.The casting method produces a high quality product without all the machining expense. It weighs a few more grams, but the price makes up for it, and they'll last forever (the tips might need a rebuild eventually).
