I think Technics rubber mat must be replaced, i've had 2-3 different types. They are all bad. I remember how huge was the improvement when i first tried Micro Seiki CU-500 (2.7kg) on my SP-10mkII. Later i discovered SAEC-SS300 (870g) as a cheaper alternative, but also amazing mat for Technics SP-10mkII. The CU-180 (1.8kg) is somewere in between.
SAEC is the most affordable mat! But stock rubber mat is the worst ever.
SAEC is the most affordable mat! But stock rubber mat is the worst ever.