Originally Posted by
Chris!
So Im having issues still...... out riding today and dropped to my lower front chain ring. Could not get back onto the large chain ring. If I adjust my derailleur any further ill rub in my small front big rear. If it helps im running a 46-30 adventure crankset, tiagra front derailleur, shimano 11-35 cassette and a GRX rear derailleur along with tiagra STIs.
How new is the cable? This sounds like a classic new cable that has loosened as it bedded in. Shift to the inner ring and see how tight the cable is. Adjust as needed.