I was in the same boat as the OP, I hadn't changed my string or D loop in a long time (8 years original string and d loop).
They were both showing some wear and I knew it was time, but I don't shoot a ton and a couple years wasn't able to hunt archery season so I shot only a couple times those years. The d loop looked worn so I changed that out a couple months ago and also knew the strings were worn but I did wax pretty regularly. So I also decided that after this season I would get some new strings.
I had changed my draw modules out a couple times and had to move my peep a little for the adjustment thus my peep was twisting. About 3 weeks ago I decided to take a twist back out of my string to straighten the peep. Let bow down from 70 lbs to 50 lbs and was going to try the allen wrench in the cam trick to do this as a quick fix.
I ended up derailing the string and tearing up the serving that goes around the cam, also broke a strand at the end of one of the cables. No damage to the bow as it was not very violent. Now I have 6 weeks until my hunt. No bow press and need new strings.
I ordered a set of strings from Mike at Catfish Custom Strings, ordered online and then also spoke to Mike on the phone. Great customer service and super strings, I went with the Bloodline vec 99. I had them in my hands in less that 2 weeks.
I also ordered the Bow Medic Field press that locks on the the limbs below and at the tips. I also found that my Tipton Ultra gun vise is an excellant way to hold your bow and use the press. I was able to break the bow down, clean and check the cams, install the new strings cables and buss cables with very little problem.
I took my time and photographed everything proior to removal. I took me a couple hours Friday evening because I had never done this before and checked over every thing. Saturday I shot it several times, paper tuned and set the peep.
Prior to the new strings I was struggling with getting my broadhead flight and due to stretch of the old strings had lost a couple pounds of draw weight.
Last night I was able to set my 30 and 40 pins along with picking a sight tape and was shooting feild points at 60 yads and broadheads at 30 and 40 yards.
Now I have total confidence in my set up, I gained back the draw weight + and added 8 fps speed, my broadheads are now hitting great out to 40 yards and I am actually greatful my mistake happened. I will never go that long without changing strings again, it will be ever 2-3 years depending on how much I shoot.
Again can't say enought about Mike at Catfish Customs and his customer service and abilities as a string maker.