DOM:IM at a loss to know what to say,but if I were in your area you would be more than welcome to come and have a look at what pole work can do.
Little teething probs are normally sorted out in the end ,like Iwas wondering why I was getting a high tds reading when I had just filled up resin vessel with new resin,then one day it dawned on me [the hose I had just filled up the tank with still had tap water init] but when Istarted using wfp it was in its early days.
only suggestion Ican make is :get a clean bucket and mop,using pure water no soaps clean windows with it and see if grease marks appear then,you could squeezy the pure water of as well,and take note of the results.
if no grease marks appear then its in you tecnique [sorry to tell you]
keep aving the faith in your pole,you in a few weeks will be laughing you self to sleep at night thinking what was all the fuss about. At least youve got help,when I first started it was make the excuses up as you went on,the problem I had was remembering which customer I had told what to,that was due to lack of training by the supplier nice to see training is now available.
With the amount of mistakes and the learning curve I went through on my own I could teach the trainers some tricks [me thinks] ,just keep the faith in your pole.
GAZA