Ihave a tiger 6 with 2000 pinto with twin webbers carbs are like new engine recondition 3000 miles ago, it can be a pig to start sometimes any reasons or do you know anyone in grimsby area who service pinto.
how do you start it , you should pump the throttle pedal twice then start it??
When i had the pinto in my car it was always a bitch to start when HOT, never a problem cold though.
Could be a timeing issue.