She starts fine from cold but if stalled or stopped v. hard to restart. Starts very nicely even very cold and ticks over grand, runs fine too but can cut out in slow traffic, maybe my fault, or if I switch off it's very reluctant to start again for some minutes. Then she runs well again. Once warm she is well behaved, can trickle along in third at 1000 rpm. No check engine light or faults logged, says mechanic I bought from. I'm new to k12s. Thoughts?