HMC - Pulsate.

Cycloid - Tribal Raid (the original, not the bold or tokyo 3 remakes).

In fact any of the old Dirty House records, very hard to come by.

Also, I saw someone ona previous page mention unknown synthetic by square? look for records by Oliver Kaiser, I managed track that one down about 2 years ago, can;t remember the name of the ep (quick tempered maybe?) but anyway, you may have some trouble, it's fairly rare.....