Yep, a change is good as a rest - but ultimately you will have to return to the week in - week out process of slowly adding more weight.

When I referred to weight increments I meant the little extra you add to try and increase your lift. Basically you want to add no more than 2.5kg each time. 5,10kg jumps work for beginners but us old timers need to take smaller steps, unless we are piling on the pounds food wise.

I always remember an article saying that you shouldn't be afraid of piling on a few extra pounds(bodyweight) temporarily to help boost your strength (the extra weight around the joints adds support etc). Maybe you could go for a diet boost for a few weeks too.

Paul.