Taylor155 - the stiffness of your langes could certainly contribute to your shinbang/shinsplints.. Minimise your backseat landings and possibly a softer boot
A lange raceboot isn't going to be very kind to you if you are taking hefty landings
You could also look into a product called Shintronics
I have a feeling that they don't distribute in Nth America yet, so you have to deal directly with them -
Straight from Bishop:
"If you guys need to get your hands on a pair of these badboys email this guy - firstname.lastname@example.org and he'll be able to set it up"