I do indeed have the info – I have a collection of AFEE reports including P45 which detailed the trials on Lancaster I R5660 dated 1/12/42 and Part 2 of P45 which cover the trials on Manchester L7392 dated 28/12/42 (sorry I may have given you a bum steer in the previous post as to the sequence).
The troop exit in both cases is the hole left by the provision for a ventral turret. Only ten paratroops could be carried along with 7 containers at 300 lb each. Not exactly a full bomb load but only the forward half of the bomb bay could be used for cg reasons!