The heavier the string the tighter it will be. I have a .130 B brand new here if you would like it, just PM me your details.
Cheers
ped
P.s - some people find the coating 'flakes' around the playing area but mine have never done this, I guess it is down to your technique (plectrum or not etc) and weather you sweat and so on. I love the fact that I no longer have to worry about dead strings which, for me, really really sap the enjoyment out of playing!
P.p.s - worth noting that Elixir strings are patented - other makes like Diddario(sp?) and Warwick coat the string before wrapping it which essentially means there is crud in the string before you even put them on. Elixir coat afterwards so nothing gets in the windings at all.