wow, that plate provides a ton of protection for those exposed wires/cables.  i too installed the tannus liners & put on the cascade plate during that process - regardless, the protection provided by the skid plate is necessary imo & not the place to wimp out because of hard-to-access screw mount.

same experience here - i recently installed tannus armour w/ the included tube (purchased as a bundle from the rad site) in a set of kenda krusade sport 20x4's that replaced the stock 20x3 cst big boats on the most current model radmini & got a flat my first time out - no tire damage, no liner damage.  upon inspection, the tube was faulty & the seal failed @ the valve stem attachment point - very disappointing & frustrating considering that the purpose of the tire armour is to prevent the dreaded flat yet they provide tubes of such poor quality. luckily i had the tubes from the stock cst's i had changed out & they were clearly of better quality.  i contacted rad customer service (including a couple photos) who immediately stepped up & are sending me a replacement tube; they are def now aware of the poor quality tubes that tannus is sending w/ the armour bundles.

you can just let some air out of the rear tire to access the fender mount screw instead of removing the entire wheel.

fyi 

Quote from: RadJohn on April 22, 2021, 04:37:46 PM
For those who remove and carry their Rad batteries around...built like a brick outhouse:

https://amzn.to/3iqsNNW

I use a Grove Tools Quick Release Seat Lock...lock the seatpost AND block removal of the battery the same as it does on the taller RadRovers:

http://www.saveyourseatlock.com

I experienced one downside with the Grove seatpost lock though....broken down for transport.     

@radjohn - thnx for such an informative & descriptive post.  after purchasing a $200 cane creek thudbuster seat post & realizing a replacement battery pack from rad would cost approx $650 after shipping & taxes, i decided that i needed to especially secure these items to my bike so i completely followed your lead.  your description of the items & your experience was spot-on right down to the seat twisting slightly necessitating the Supergrip Carbon and Alloy Assembly Compound which solved the problem.  thnx again.  btw, all for less than $50!!!