any body try out the jconcepts firm tire inserts for a T4
http://www.jconcepts.net/store/index...roducts_id=176
want to get me some but want to know how stiff they are compared to the trinity bomb1 we use them with losi pink tapers in the rear for a inside clay track are they very simular to the bomb1 or are they softer thanks for any help.