Umarex Purchased new USMElite in .22 - haven't shot yet...

Rifle is in the box in a corner waiting to be degreased, cleaned, and relubed before heading out to shoot. Many models and makes scoured online before I purchased. Straight up, I PREFER the FEEL of the Crosman Shockwave to the USME, but the USME is likely the better shooting of the two. Test target results will speak for themselves. Other makes I've had over the years: Crosman Shockwave, Stoeger X10, and Ruger Explorer. In terms of lubes and cleaners, I have GooGone and Ballistol. What can I squirt into the comression chamber every 1000 rounds or so? Oh, and will Locktite the stock screws in place as others have suggested. Anyhow, good to be here. :)