Do you have a picture of your needle adapter? I need to do the same thing, add a bit more grease.
http://www.amazon.com/gp/product/B0002SR6XE?psc=1&redirect=true&ref_=oh_aui_search_detailpage
I bought this one. Worked perfectly. I was able to slide it under the boots, both inboard and out board, pumped in a few pumps of grease and called it a day.
Also, the new bands I used were sourced here (note that I only had to replace a couple bands on each side so this 6 piece kit was enough, if you have leaks at each band I think you need to buy the 10 piece kit.): CV clamp kit (6 piece)