Thanks guys!
I would normally buy a pedal rather then build one, coz i understand why these are so difficult to build. I've been playing around with fuzz, distortion and overdrive pedals since i was about 7 (im 19 now! well,,,, tomorrow...) and rigging them through electro-acoustics...
The idea was to build one myself to put into an onboard effects centre on a guitar that im overhauling, and i was going to buy a cheap Danelectro flanger and put it on, but i just thought I'd test the water and see what you guys thought....
Back to plan A for the moment then!
Thanks all the same!