fallboard pivot

[J Patrick Draine]

While doing a service call (tuning/appraisal), I was foiled in my first 
attempt at removing the fallboard from a a 71 yr. old Marshall & 
Wendell 4' 8" grand. The fallboard has brass slotted pieces which seat 
onto the pivots which are fastened into the inside of the case. While 
one end slid out gracefully, the other wouldn't give. I believe (based 
on past experience with similar M&W's) the screws which seat the pivot 
are loose, and the pivot point wobbles around as I try to remove the 
fallboard, thus foiling my attempts.
Aside from yanking it out by brute force (thereby either trashing the 
fallboard, or sending me flying backward onto the floor at the very 
least), are there any helpful hints from thew assembled wisdom?
I was thinking perhaps if I had an extra pair of hands I could use a 
very thin screwdriver or blade to stabilize the pin, and *then* lift 
the fallboard out. Anyone run into this problem aside from me?

Patrick Draine