[since google dont work, i can show the pics of the two] anyways, in my previous gym (2 years old---basically brand new) the dumbbells i used there for 2 years was the "rubber type". now in my new gym (same franchise) they have older weights, and the db and even plates are the old full iron ones. i dont know if its just me but the older full iron weights are heavier than the rubber type. for example, with the rubber type, i can do 90lbs db incline 4-6times. while with the full iron db, i can only do 80lbs 4-6 times same i notice with BB bench. anyone here ever had this kinda change?