We have been having a little Feb. thaw..temp in low 50's, so I decided to try out a couple of new to me .38 wadcutter moulds. First up was a like new Lyman 358081BV. Using a ww/50-50 solder alloy, bullets dropped perfectly filled out as soon as mould was up to temp. This alloy is probably tin rich as every toolmark in cavity showed up on bullets. Next I tried an old early Ideal non-vented dbl. cav. 358245 112gr. wadcutter. Bullets from r.h. cavity (looking at mould from top in normal casting position) came out perfectly filled out...However, those from l.h. cavity failed to completely fill out the two tiny middle drive bands on one side of bullet. I have had this problem happen before on account of first cavity blocking air release..but even when filling this cavity first..still failed to fillout. Tried upping & lowering temp to no effect. The closest I came to success was by letting alloy fall considerable distance into mould ( I dipper cast) and then bringing 1/2 full dipper into firm contact with sprue hole and letting sit for few seconds before letting contents spill over sprue plate...messy, but bands still were rounded on top & bottom edges. Miking cooled castings revealed bands were .3585" so will probly be OK. The bands on perfect front cavity miked .359 to .3585. Mould was carefully washed in hot water with Dawn before using. Any ideas? Thanks.