I went to check the oil in my CB400 and the dipstick for the oil has fallen in. So I have an oil cap but no dipstick. My questions are: 1. How the hell do I get it out without taking off the cover? I'd really rather not do that. 2. How long is the dipstick meant to be? If I use an empty pen case or similar I'd like to know how high the oil should be. If I leave the dipstick in there, will it do any damage? Is there a chance it could get hot and melt to something else?