I'm curious to know if anybody out there is currently/previously using Vision Model V-70 racks with Freedom Breeder FB70-C tubs? The specs for the Vision V-70 tubs and the Freedom Breeder FB70-C tubs are very similar (V70: 34" x 17.5" x 5.3" FB70-C: 33.5" x 17.75' x 5.3") but I want to make sure the fit is secure. I like the Vision racks but I'd rather use the FB tubs if I can.