So coming full circle, the best solution to your problem is to find an ETF that has a more suitable weighting. (money.stackexchange.com)
Find a suitable weight and attach it to the other end. (fitnessandpower.com)
To begin, choose a dumbbell of a suitable weight (one that allows you to complete around 12 reps with good form) and sit on a flat bench. (fitnessandpower.com)