I have had some of these type fixtures that were not so clean/used.... Say if you touched the lamps while installing it would burn off finger oils, and dust etc. Reduces bulb life if you touch them, and may burst....
As for the warmth, it is something to watch out for. These Low Voltage fixtures have a tendancy burn out contacts if not really tight. I will often put these up and wait a while with the fixture on for it to heat up. Check all the hokey fittings these type of things use, and tighten them, and check them again. We warrantee these things, (if we sold it to them) and if the fittings or contact aren't tight, or resistive they will heat, and eventualy burn out, if not cause damage to the fixture, are a possible fire hazard if left un-corrected. Some minor heat from the lamp is ok, but if the conductive parts are hot, start tightening..... or thats $270 down the drain. (And I personally feel these type of fixtures are great, but recently the quality has gone down.)
