Upstate NY: Near and distant channels on same heading, help with distant ones?
I have a ChannelMaster 4228 (the old version) that I installed about 13 years ago and have been enjoying local stations that are about 8 miles away, and also the distant stations that are about 68 miles away, along the same compass heading. The distant channels come in clearly about 40% of the time with low signal strength, but it has been gradually degrading, so they are almost un-watchable.
The plan is to take the antenna down and clean it up, including replacing the balun, removing oxidation from the whiskers, sanding connections, using electric grease, replacing the coax cable, sealing connections, and then re-mounting it and re-pointing it.
Path is: antenna is 30 feet up, coax to exterior grounding block, enters house to a splitter with 2 cables each to a TV. A couple distant trees I can't control, a few branches nearby that are close to the signal path.
Someone suggested an amp, but I am concerned about "overloading" the current nearby channels, which I can honestly pick up with a paperclip.
Is there a recommended solution to get the distant channels?