Unless the time line has changed here is what is showing up on Bowl.com, if this is still accurate your PSO is off by a year.
August 1, 2018 - Bowling ball companies were submitting information about oil absorption rate, the goal is nothing that is faster than 2 minutes and 15 seconds. This rule is to be applied August 1, 2020
August 1, 2020 - The elimination of the allowance of balance holes in equipment. Bowling equipment can have up to five gripping holes as long as each gripping hole is actively being used.
August 1, 2019 - Towels used to clean equipment during competition must be dry and free of any liquid cleaner
January 1, 2020 - Balls are allowed to have up to 3 oz. of side weight in order to help bowlers prepare for the elimination of the balance hole (I thought this was moved up, but the article online still states this date).
https://www.bowl.com/News/NewsDetail...id=23622331019
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