Ok, I finally managed to papertune my Tomkat, well sort off.
I placed my target on a shelf in the storageroom and ducktaped the doorway with paper.
I have offset arrows and straight fletchedones, the bow is now tuned with straight arrows but I tried all afternoon with the offset arrows and kept having irratic flights.
I twiddled with the nocks and the rest and at different distances, 2m and 4m.
Any clues to what's causin' this ???
Most impacts gave me a slightly high left tear.

Frank
Belgium