Thanks, Looks like I will need four and will send you my 20 in exchange. I need a 502-503, 506-507, 507-508,and a 508-509. these give me clearance on the looser end so may be able to live with slightly thicker.
is this exchange still active? I have a couple sets of buckets, most in the 497 to 490 range but as low as 483 and am looking for thicker ones 503, 507 ,509