Hi George and thanks for this input, you rise a good point here by saying there might be something stuck in the bearings. I guess the best thing I have to do is bring the whole stuff to the shop to have them look at it, they'll know better than I will. Your message is still a bit unclear to me though, as my English teacher never told me what "to mike means". From what you describe, I can draw a rough picture, but I haven't found the word in my eng.-french dictionnary. Could you provide some light, maybe a picture of what the proper tool is supposed to look like (or web resource)? Thanks in advance, your help is, as always, highly appreciated!
All the best and greetings to the heart of the USA ;-)
Séb