Now, Micro Crystal Klear gives an unwanted glossy shine. So this is why I want to apply matt varnish.
I am using the Army Painter Matt, which I find to be very good. However, it partially destroys a thin layer of the surface underneath (as does any matt).
Having tested the varnish on some other models I have found that it has stripped off the paint.
I read that it's good to apply "Klear" floor varnish, then the matt varnish. I hoped that the Humbrol gloss would work just like "Klear".
So, I tried a Humbrol gloss finish...and again the paint streaks away as a result of the gloss varnish

So now I have two cans of gloss & matt which both work like paint-strippers!

Any ideas on alternatives to "Klear" (£27 on eBay!), which allows you to spray matt varnish afterwards, without the risk of damaging the paint
