Reversing gear only works on 60 size pulse. On the 125xt lots guys shim back of gear,either 1/16 or 1/8 inch and solved prob for most part. I'd use plastic or lite ply plate not very wide but full lenght of gear mount.Paint if you want to. Until very used to taildraggers and this plane in particular:
LANDING: roll out to stop,put ele on high rates,taxi in slowly
TAKE OFF: low rate,full up...second tail starts to lift let up on ele about 1/2,if you let up 100% nose over. timing timing timing= practice practice practice

Google for thread here on this plane lot of reading BUT tons of good info