Another tweak helpful for improving contact.
CONNECT 2
Premium Contact Cleaner
Product Features:
òAudiotop Connect 2: Premium cleaner (second stage) / 30 ml.
Product Specifications:
Formula: Mixture of an highly purified (99,999%) non specified substance. Instructions: Perform cleaning with Connect 2 in the same way as the basic cleaning - but this time without using files. Let it dry. Afterwards the contacts are analytically purified.