:doah:
well hopefully since you told them it wasnt "running" right, they wont restock it. once torn down, they will obviously know the piston was taken out by a customer and replace it, etc. in the future, hopefully you refrain from doing stuff like this... but to each his own.. im not your dad... lol
to most it prob isnt worth it... but if you choose to do so, you may not want to explain the process you took in a public forum. 1. it may encourage other younger members to do so and the gain is very minimal if at all, depending on your mods (IMHO)! 2. out here (and in most states) it would be considered burglary (felony). not that anyone would research all of this or a store would know to check forums, etc., but you never know who is watching and how they feel about that sort of thing... the fact that you took the time to do all that, is what would provoke a person to make sure you "paid" for it, one way or the other. usually when someone forces you to pay for something, it costs more than if you would have paid for it in the first place...
anyhow, the good luck with your build is sincere, take care