So i bought a boyds at one thumbhole for me cz455. The action screws are too short. I can not find any longer anywhere. Went to fastenal today and got 6x1 x 30mm and 6x1 x 35mm. the 35mm was the longest they had and it wont reach (in the rear). Also, the head of the screw is a little bigger than the cz ones so it doesnt fit flush in the stock like it should. Any insight would be great.