I've just had had a look at- well, friend Shipto now. Clearly, he is trying to find answers to his grit problem( which to me, isn't there)
There is a motor bike 'thing' somewhere here( or not, as the case may be)
I could willingly answer Shipto's problem and the motor bike thing is so unimportant that I haven't bothered further.
Having said all this, it would be constructive -perhaps for others to be aware of difficulties and solutions.
Me, back to my coffee and dealing with the more obvious affairs of today.
Regards
Norman