Use loc-tite on rocker arm bolts?
 

I installed 1.7 cobra RR's and did'nt think to use it, should I go

back in and put loc-tite on them??

Yes, especially if they are aluminum heads. Use the blue threadlocker by Loctite. I have had on ocasion had the rockers come loose after the install even though they were torqued in place. Just be sure to clean the threads of oil before using the loctite.