hi got a vfr nc30 and put new plugs in to get her started and it wasnt tighin in properly i persume the thread on the bike is poss knackered. whats the best way to fix this is there anyfin u can do to sortta bodge it for the time been? many thanks in advance

The best thread repair I have found is a "Time sert" these are made by Wurth. I have used these on Caliper threads and a few other things they really do a good job.
Just need to find someone near you that does them.