murfy...dude, trust me....just stick with your regular plaid/purple combo. using the other "nitro" tires will just give you a head-ache. but i must say that i've yeilded my best results with Elligi 42f/40r 30mm trimmed to 28mm.(on x-ray T1x) and speedmind 42r (on front) / 40r (in rear) with Mi1 & Mi2.
nitro tires are different. They won't work well. Just get jaco, trc or crc foams. trc rims are the toughest as they are nylon, not plastic. You can seal the vertical edge of the foam with a THIN coat of ca to help prevent chunking but if you are nailing the boards, you are gonna ruin tires.