ORIGINAL: Rob/PA Bowyer
You won't have any problems with this setup but I am concerned that you bought a 70.8 lb Tribute and have back down all the way to 60 lbs. I assume you want to work into more poundage or why didn't you just purchase a 60 lb bow?
Wow, I missed the part about shooting a 70# bow at 60#. You're giving up a lot by doing that. All bows shoot at peak effeciency when they are maxed out or close to it. If you are intending on shooting that bow at 60#, then I'd suggest trying to buy or trade for a pair of 60# limbs.