Dent Man Paul

Hi, Just a quick word to introduce myself...Im Paul, getting back into trials after a 20 year gap. I purchased a Scorpa Easy 250 cheap but only riden it once and found a few issues with it that need sorting. struggling to find parts, mainly rear caliper piston repair kit, any help or guidence would be much appreciated! Also have road bikes inc Duke 916 and Suzuki V-Strom (for a easier ride)! and looking for a green lane bike. Be good to chat soon Cheers P