[Richard Johnson]

*** My experience isn't the same as yours - and given overall ocmment I have read, most find a cler improvement - I do too... and on the few occasions I used one a static device like grassmaster gives a clearly different result to the puffer bottle.

For some examples of good results look at Neils layout thread - perhaps asking how he uses it may lead to a few techique changes that will give you better results.

regards

Richard