[Healeys] Front caliper rebuilds

[Don Day]

I’m working on my 65 BJ-8 front calipers . Car has sat for 10 to 15 years . I’m rebuilding the calipers and I can only get one of the calipers pistons to come out. After removing the caliper I’ve applied air pressure to the inlet and I was only able to free up the outside piston . What can be done to free up the inboard piston ? 
    Any suggestions would be appreciated. 
            Thanks , Don 

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