I had to reload this to youtube. I had a music track at the end of the video. I acknowledged the third party copywrite but My video still became “unavailable” ,so I deleted it and started over. Sorry for the inconvenience.
OK, we are dropping the 66 inch tub into a 69 1/2 inch hole. Only problem is the motors stick out 4 inches past the edge of the tub!! The left side 2c4’s are notched out about an inch. We made a mortar bed and dropped the tub in to squish against the mortar whilst the mortar is wet. Please make sure your floor can support the extra weight. This is a tough job to do, leave it to the experts.