Modifications to arm training on hypertrophy templates

Hello all,

I’ve done both the 3 and 4 day hypertrophy template and only got minimal arm hypertrophy (measured with soft measuring tape) despite being in a caloric surplus (counting macros and gained weight) and other body parts responding much better. What changes should I make the next time I run one of these programs, if any? I was thinking of changing exercises/ adding an exercise/ adding sets. Thank you

I’d add sets, and if you get to the point where it becomes impractical to do more sets in one session, increase frequency.