I received a phonecall from Mat this morning at Cleansmart who kindly went through the problems i was experiencing with foam on a job recently and it would appear that it was caused by an accumulation of residue from a previous job, which i failed to rinse out properly.
I also received for gratis
a new rubber seal for the lid as the old one had become creased, i retested the machine to make sure it was clear of residue, which it was
these machines are very new to me as is carpet cleaning
so i still have a lot to learn it seems thanks for all you help guys with hindsight i should have called Cleansmart first