Sorry for crappy qual, its a phone. Are these polylock roller rockers or not? It doesnt look like the other ones ive seen in pics. Other ones look like the nut actually gets jammed in the rocker arm, and this ones it doesnt, the nut just sits in there loosely and can spin.
These are C.A.T 4340 steel 1.6 RR's.
Thanks

 

Those are not Poly Lock nuts but it looks like you could use polylocks in place of those nuts. Polylocks would normally be used with full roller rockers and would rest on the flat part of the roller fulcrum. You don't have roller fulcrums, only roller tips but you still have a flat area on top of the pivot ball which sits under the current "Locking" nut. The Polylocks work by screwing an integral alen screw down on top of the rocker stud which "binds" the polylock to the stud. You existing locking nut works by friction on the threads.

 

Ok thank you...anyone know where to buy some polylocks? Ill check out thunderracing and summit right now.