RE: Xtec Tuning advice...
I would tune that bugger till its the best you can do honestly. Using mechanicals is no excuse for half a@# tuning. Actually, when you think about it, you need to generate as much KE as possible for a given setup to make a mechanical style head perform at its best. This is because you need more energy to open the blades typically. Tuning your bow properly will ensure better efficiency and highest potential amount of energy your bow has to offer.