Thanks for the help and kind offers, one reason I don't want to stray from the MG community.
Took it on its first 'long' run tonight, around 80 miles and it's dangerous to drive to be honest. Below 3.5k revs in any gear it just doesn't want to accelerate. Above that it flies, feels better than it ever has. Such a predicament as I'm tempted to strip for parts, on the other hand it could be a simple fix. Either way it's not going back to that garage.
I simply can't throw any more money at it, but I need a car for my job.
To add some perspective I used to be able to cruise at 55 in 5th. Now I have to use 3rd. If I use 5th the car slows down, 4th it feels lumpy and in 3rd gear it's revving high but at least it pulls