Minolta 100 2,5 and suspicious inner el, disassembly docs?

[Spokklocka]

Hi,

The number of lenses with suspicious innards bought on ebay have been around 50% lately, from sellers with good feeback. Latest:

http://i90.photobucket.com/albums/k253/Lindinblade/DSC03960_DxO.jpg~original

http://i90.photobucket.com/albums/k253/Lindinblade/DSC03957_DxO.jpg~original

The "drops" look too thick and few to be a sparse carpet of dust and those lines..look almost like cleaning marks. What do you think it is? (Besides a request for a return / partial refund)

Edit. Ï have been offered and agreed to a partial refund so now I'm free to bring out the screwdrivers and calipers. Matt B on YT has not disassembled this lens, nor has anyone else on YT it seems, and the only thing in way of a guide I've found is http://minolta.eazypix.de/lr/100_2,5_md3/nmd100.html and it deals with a later variant (MD). Mine is MC-X, nr 2 from the top: http://www.artaphot.ch/minolta-sr/objektive/165-minolta-100mm-f25

Has anyone another repair resource for the 100 2,5 MC / MC-X I'd be much obliged!

[Spokklocka]

Easy to unscrew the front optical block. The problematic dots covering an element appears to be on the inside of it however and applying calipers and some force to the two slots seen in this image does not turn the two pieces in relation to each other. Ideas? I could just leave it and store it with another lens that has some sort of fungus problem but it would be good if I could get this block open to try and clear it.

https://hnrubq.dm2303.livefilestore.com/y3mNEHgCLTzMSnwZxuP7nni3atGWWPgiOPe0hgvVxTpd_ru6MG9vSifyEjtgCY10OJr8w7IYZl153SuQdKmmp_4KUrTYmHPJ9NYHDZXKNYDQnTIQRR55JSn7L1drRvb1Q4LreN12mjTnq5bX3Ky7vphz4rgYrQVFnaNPSyBf-ib_vM?width=577&height=1024&cropmode=none

[Gardener]