I tore the top of the motor down and discovered that one of the 2 6mm bolts on the cylinder were broken off. The previous owner apparently broke it off and then put the bolt back in with silicone and didn’t fix it. So I looked around and somebody on here said get a left handed drill bit and drill it out. Did that but broke the bit off in the bolt and now I’m in a pickle. Any suggestions? Also tried to get a cobalt steel bit and drill through the bit and that’s not working.