Apologies if this is, as the title suggests, a really dumb question but I'm an absolute novice with hydraulics. I'm fitting madass's Tokiko brake upgrade; there are 4 threaded joints in the hydraulic line: one at each end of the flexible hose and the steel pipe. What, if anything, should I use on the threads - grease, teflon tape, Loc-tite??? Or should they just be spannered up tight(ish)?