Thanks guys, I think my G23 may be on the heavy side as it's a mag engine and really isn't as powerful as a 120. I'd liked to go all gas due to the cost of glow but I already have two new OS 120 pumpers (bought for another project that has been sold) so maybe I'll forget the gas on this one. I contacted CJ and their complete retract system is $255 + $35 for a valve. Thanks ffdg, I'll check ebay for those retracts.