Could the fact normal spots create a lot of heat be adding to the issue? Whilst not as bright I'm changing my spot lights where I can to LED ones, they take far less electricity, last longer, and generate almost no heat. They're more expensive though... There's a few few on-line shops and ebay...
I have had a folding timber loft ladder installed, given my roof is over 3 metres high it was a nightmare to find something suitable (i.e. they were all far shorter than 3m), in the end I got ladders shorter in the hope of simply putting an extra pair of brass hinges on the last rung and adding...