hi.i will be replacing my guttering in the next month or so.the roof is a large area so i have decided on a xtraflo 170mm wide type. only thing is that they only do 90 degree corners/angles and not 135 or 150 degree ones like the smaller sized guttering systems do.i have a pair of 5 sided bay windows (pic attached). does anyone know what angle pieces i need to make this work.i know theres an adjustable one on the market but its smaller than this 170mm wide system.Any help i would be grateful.thanks.