okay so i have been running airsoft pellets in my 35" MTR's for a year or so now, been real happy w/ them. the problem is within the last week i have had 2 vavle stems start to leak. the stems were both loose fitting in the rim, like they had been damaged from the inside. i am wondering if anyone else has had this problem w/ airsoft pellets, or if it is just a co-incedence(splg) that both vavle stems went bad. never had one go bad before on any rig. also i didn't put new stems in when i had the tires mounted. don't know how old the stems are cause they were in the rims when i got them. they are alum. wheels. any thoughts?