How much did the Picco .27 cost? Is it as powerful as the Mach? I heard other talk of something like a Collie .30, is that a good one? I was reading another post on here of people that have had to send the engine back up to 4 times, this is not very good sounding. I think instead of paying $200 for another engine I would rather just buy a Savage or Revo for around $450. I am extremely dissapointed with all the problems I have seen with the Mach. I just wish I found this forum before I bought this truck.