Weight tubes are a real pain in the a$$. I would never suggest them.
From what I can tell, you are shooting about 62 #s. I don't know anything about your bow or draw length so I'm lacking enough info to get this close.
I will tell you that you should be able to shoot a lot more front weight on the 7595's if not, build out the sight window a touch.
I am shooting the 7595's out of an 80lb bow at 31"s and 300 up front. Yes, I have had to build out the sight window. Doesn't hurt a thing to do this for tuning. Once the arrow are flying correctly, the depth of the seight window means nothing!
If you would like more help, feel free to contact me.
thanks, bigjim