I’m looking for a teen/young adult book that follows a group of girls in Jr. High adventures. Read it in the 80s. The only adventure I clearly remember is a team gymnastics competition where the girls squirt ink on a competitors leotard- that girl and her twin sister had been switching places in their best gymnastics events, so their team always won! (Yes, a huge crime.) Then the ink-stained girl and her twin had to finish the competition with no cheating, and they lost. (Justice prevails.) If anyone can help, I’m desperate to find this one. TY in advance! The Rascals from Haskell’s Gym, by Frank Bonham ID’d by an Anonymous Lost Classics reader!