Hello.
Scourge, sounds like two little noises at once to me... I don't know. I'd say it could be some lateral play or space between the lower link and either the front or rear triangle. You may have a washer misplaced, missing or that they do not fill the space sufficiently. Disassemble and go checking joint by joint moving it energetically in all directions.
The joint of the lower link with the rear triangle must be in this order from the inside (where the wheel is housed) to the outside:
· Screw head - lower link with its bearing installed - washer - rear triangle; so on both sides.
At the joint with the front triangle make sure you have a washer on each side between the lower link and the frame, resting on the inner race of each bearing.
It could also be the junction of the front triangle with the upper link; here it must be placed from the outside to the inside in this order:
· Screw head - upper link with its bearing installed - shaped washer with the narrow part facing the bearing (this
narrow part rests on the inner race of the bearing) - front triangle; also the same on both sides.
Another option is that the bushings of the the shock are not the correct size and leave some space.
If everything is placed correctly but there is some play somewhere, you should add some thin washers that fill the space, but without being tight, so as not to block free movement or force anything.
I hope I explained well.