I decided to buy this sprayer:

http://www.silverlinetools.com/en-GB...atering/630070

upon receiving it the lance was missing, the seller quickly dispatched me a replacement. But my first use of it, I dont like it. It leaks from every orifice the solution can find, but mostly from the top funnel. It quickly fills up and gushes out onto the floor making my workstaion completely soaked.

I've done a google search and it appears to be a common problem, bu there's no answer to find how to repair it, theres loads of o rings and the pump unit itself is doused in grease. likely to stop fluid from entering the pump but its just rubbish.

Any ideas what is causing the leaks?