Drill the centre of the torx with a 6mm or larger bit until head of screw falls off . Repeat . Once upper section is on the bench drill down the centre of the screw shaft until through metal but be careful not to plunge through the plastic frame . The torx screws fit into a brass rivnut style affair pressed into the plastic post so you can either hoik these out with some device or use flange pan pozi self tappers to re fit ....
....or at least thats what I did .
Is the seal a latex rubber or a synthetic , do you Dis ? Are most seals synth stuff these days ? I am never sure .....
BTW , the mask up and sika injection sounds appealing for the front sunroof on mine - did you rake out any of the old material before applying sealant ?
cheers for that...
will have to invest in a dremel... usually use my angle grinder but not a good idea with all the glass and plastic...
1st time i've ever needed a delicate aproach with a landrover...