Update, TV repair man came up trumps and fixed it, he recommended not using any kind of adhesive as if it goes again I’d be b*lloxd.
Got it all back together & it’s running as sweet as an old neglected bike can do.
After a bit I noticed that the revs were rising on full right lock, so reckoned I might have compromised the throttle cable routing while it was all apart, so undid it all again sorted the throttle cable and hey presto no issues….. but you just know it’s not happy ever after.
I took it out for a spin to pick up a close-ish tag a 50 mile round trip, (the furthest I’ve been on it) and after a good run it stalled at an island after a swift dual carriageway run, it started straight away but continued to stall when revs dropped to idle, also it would occasionally cough on acceleration & the rev counter would spin up before settling down again, this was a git in stop start traffic.
Took it apart yet again and found that the throttle wasn’t closing fully as there was about a 3mm gap between the mechanism & the throttle stop, much gnashing of teeth & rude words ensued as I yet again rerouted the cable until the throttle opened fully & snapped shut properly, put it all back together yet again & took it out for a ride this morning for a couple of hours & now all is relatively good again.