ZF 4HP22 transmission filter replacement DIY

[shogun]

4HP22 Gearbox Filter Replacement on a 1990 E32 735
http://www.bmw7resource.co.uk/TechDocs/4hp22_Gearbox_filter.pdf

same applies for the 4HP24

[shogun]

I just found a ZF repair manual for the 4HP22 for $49
ZF 4HP22 Repair Manual - EPC4YOU.COM (http://www.epc4you.com//9-car-service-repair-owner-s-manuals/118-zf-4hp22-repair-manual.html)
very clear pica/drawings.
Anybody already bought from that shop?