I may be wrong but I don't believe that a TM1 Special shoots any higher than a TM1. Olliedawg has sold a lot of TMX's and has stated that most shoot flat but some shoot high. Some time ago there was a picture of a TMX on here where it was obvious the rib had a steeper slope than the usual TMX and someone said that a limited number of them were made to that spec by the factory. My TMX shoots about 9" high at 40 yards with a little space between the beads. I have patterned several TM1's that shoot flatter than my TMX. I have a universal single barrel for my MX3 and the rib has a steeper slope than my TMX and this gun also shoots about 9" high at 40 yards.