New member in need of help

[Fitter Steve]

It sounds like your already on the fit? If the tambour doors are not fitted to the unit they should be oversized so you can just cut the frame 10mm more and hopefully fit the tambour frame 10mm higher than it should. I dont fit loads of tambours so not sure you can fit the frame 10mm higher than the unit. If you cant you are just gonna have to raise the units 10mm off the worktop and fill the gap with colour match silicon. With the frame cut 10mm longer than unit it will all look correct with the frame and door going all the way to worktop

If you are not on the fit and just in ordering stage just get the tambour unit made 10mm higher