So LBA could have 3 or 4 based 757’s ? I wonder if they will dispose of earlier 733’s ?

I doubt it. Some of the older 737s are QC aircraft and work cargo and mail runs at night which is a nice little side earner for jet2. Plus the 737s are all kept busy. I do belive that a jet2 737 is stateside at the moment getting some sort of refit.