I have a 1966 williams 8 ball and it was rerubbered . The shot into the horseshoe seems more often than not to bounce back or its travel impeded. My question is was there a plastic or a guide underneath the actual horseshoe plastic that might be missing in my game , there seems to be 4 holes that there possible could be , not unlike middle plastics on a bally game . if there wasnt should i just increase the size of the rubbers? thanks in advance