ORIGINAL: Dnk
Sproule, plastic inserts are for the string end. There something wrong with them. This is not normal. If your shafts are straight I think you should get an ASD from G5 Outdoors. What broadheads are they?
these arrows are HORTON xx75 ls lite..they have plastic nock and PLASTIC THREADED insert for points..
i took them out and wanted alumium..i also put 2 inch blazer vanes on them too and took off the 5 inch vanes..
archery shop put in 2219 point inserts and left the plastic in the nock..
guy from italy who tests crossbows told me to get those vanes off and also get that plastic point inserts out..he said you want that FOC to be heavy on front..
i am using SPITFIRE 100 mechiicals in his bow..
hope this helps