[quote=NormK]So you didn't see it running before you bought it?[/quote]
No, I did. You have to give me a tiny bit of credit ;-)

As mentioned - I'm 99% certain I've either reassembled the carb with something not in the right place or maybe have broken a bit of the carb. I didn't want to do a complete clean of it, so as stated earlier took the bowl off, sprayed some carb cleaner on it, then took the fuel pipe off the side and shot a little compressed air in this hole to try and push out any crap that might have been in it.

The plastic section which has the float etc attached to it fell off, leaving just the brass jet screwed up into the top metal section. There were rubber seals all on this so I assumed it wasn't a big deal i/e I hadn't broken it, I placed it back in place - but it would fall off again, so I placed back on and assumed the fuel bowl KEPT it inplace when it was screwed back on as well.

Seems this isn't the case - am guessing I've either broken something - or the brass jet(?) needs to be unscrewed and thats meant to hold it in place.

100% my fault - as mentioned was a tad depressing as fuel all over the place and I was aching like crazy from doing all the other cleaning up of it - carbs & me are not a good pairing.

Will summon up the courage to take the engine cover off & unlink the carb later (taking photos of where all the connections go - learnt that one the hard way!).

So definitely runs - seen started from cold, no issues.