keep pluggin away
Dont know how old you are Lord Flash, but dont give up. I agree that 128 in the current climate probs not good enough to get selected. I am very fortunate, I am ex WSOp and at 29 did the cross over to Pilot, witha score of 169 out of 180. I have just finished EFT at Wyton, and awaiting streaming, so basically never give up of getting to where you want to get to.
As for IOT, not a chance of changing branches at or after IOT, the RAF basically has enough people coming through the doors to fill the slots.
I only managed to change from SNCO aircrew to Pilot under a new scheme the RAF intoduced a couple of years ago allowing SNCO aircrew to apply up to age of 31. This is when they needed pilots. but not sure they still aloow it as the climate changed.
Anyway good luck with it all!