Willie Jan - On my L1200, the 80mm lens focuses fine on a flat lens board. Measuring the bellows unit, from the top surface where the neg carrier sits to the bottom of the lens board, I get 40mm compressed, and 240mm at full extension. The 75mm lens focuses with approx 70mm of extension.
Presumably, you have a Femocap under the head to hold the condensers ?
If so, any chance you could take some pictures and measurements - If I can't find one, I'll need to fabricate a replacement.
Ralph - You didn't go for the one that was on fleabay last week then.