Crossman 140

Been given a crossman 140.
The valve is stuck tight. Took it to a engineering shop they hit it so hard that it has split the end of the bake merest the trigger. So I took it off him. Any ideas as to releas it. Hopefully the valve should still go through, even though It has split a bit.
Any ideas and anyone hav a new valve end piece .
Cheers wab

Look at the parts diagram: http://www.crosman.com/pdf/manuals/c.../C1400-EVP.pdf


What part number is it you are trying to locate (this would help people)?