hi i just received my new hyper st. and cant wait until tomarrow to start the break-in of the macstar .28. anyway im already thinking about a new and better mill to put into it. so heres my question. what are your thoughts on what engine to up-grade to? or what are you other truggy owners(esspecially you hyper st guys) running in your truggy? i was thinking about the jammin jpx .28 or the trinity extech fully modified .24. what are your thoughts and what do you guys like? well thanx, clay unruh