Ok thanks my fellow RC nut headz......after extensive lurking around numerous forums on the issue of where to tap a "hole" tires or wheel...I'm going to bite the bullet and punch some holes on the tires not wheels. I found that numerous rc peeps and some reputable rc tire manufacturer's "AKA" & "Jconcepts" far out weigh the concept of taping into the tire than wheel. Being an engineer by nature, I can see how the centerfigual force of crap "exiting" the tire than "sucking" crap thru the wheel. But who knows strange sh!t happens all the time. This is one of those real world applications trumps book theory anyday. As far as "WHERE" to puncture the hole I would assume the very dead center of the tire. I haven't seen any posts that reccommend location puncture site. IF anyone has done this please post your area of puncture site. Thanks in advance for your reply.