1987 - 1275 carb engined mini (mis-mash of engine parts)
HIF38 CARB
Problem:
I had some work done tuning the car and it now runs 100 times better than before.
The accelerator cable will sometimes stick at around 2000 revs when driving above 2000 revs and then letting the engine slow down it will stick.
Now I can see what the problem is which is the outer part of the cable is stiff and physically moves with the inner part and it gets stuck on the guide (carb end),
Have added a quick diagram of what's happening to help:

So my question is should the inner part be able to freely move from the outer part ?
And is the cable fixed in place anywhere to stop it moving ?
Will be buying a new cable in a minute from my local mini shop but any tips fitting it ?
And will it be ok to buy a nylon inner sleeved cable which is an extra 5" long (can be used with webbers so say), will it be too long then ?
Thanks all for any help











