ZX2R top petrol tank bolt loose

Hi all,
Just a quick question for those who ride ZX2R in particular 93 model.. There are 2 bolts that hold the petrol tank, one below the handle bar and one below the seat.
The bolt below the handle bar screwed in but cannot be tighten.. it keeps turning when I tighten it.. I pull the bolt out to look at the thread.. Looks good.. I suspect it is the hole on the frame is stuffed.
Anyone has this problem? How do you go about fixing it? It is firm at the moment but not tight.. I am thinking of using similiar size toggle bolt.. but the problem is the next time I take the bolt out for maintenance purpose, the toggle will be left below the frame.. don't mind getting another toggle but what's below the frame where the hole is? If I drop the toggle in, will it stuff up any mechanically items?
Any comments will be appreciated.
Just a quick question for those who ride ZX2R in particular 93 model.. There are 2 bolts that hold the petrol tank, one below the handle bar and one below the seat.
The bolt below the handle bar screwed in but cannot be tighten.. it keeps turning when I tighten it.. I pull the bolt out to look at the thread.. Looks good.. I suspect it is the hole on the frame is stuffed.
Anyone has this problem? How do you go about fixing it? It is firm at the moment but not tight.. I am thinking of using similiar size toggle bolt.. but the problem is the next time I take the bolt out for maintenance purpose, the toggle will be left below the frame.. don't mind getting another toggle but what's below the frame where the hole is? If I drop the toggle in, will it stuff up any mechanically items?
Any comments will be appreciated.