Folks, am new here so thought I should say hello

whilst I have a look round for tips,mods,probs etc for the SP1.
Ive been offered one at right money and am 99% going to buy it next week.
I blew my TLR up last year and sold it as a basket case as it was going to cost to much to sort it. I was looking for another TLR but my mate has this SP1 for sale and I really do like it.
So anything I need to look for or be aware of? Do they suffer from self destructing cranks like the TLR does?