so, the fuel cap got harder and harder to open

, resulting in both keys getting bent, so rather than getting a new key (believe they are chipped, costing £40 ish) I decided to get a new cap.

The problem lies in that I can't remove the key when the cap is not on the tank. So my only option is to put the new cap on but only have one bike key which is still bent and a bit dodgy. I'm sure there is a simple solution for this, have tried various things like putting the old cap in a vice, just in case the latch needed to be under pressure
Any ideas??
