What kind of adhesive can I use to patch up some of the spots that have separated from my liner?

You can use Permatex trim adhesive..basically rubber contact cement...spray both surfaces...let both dry then press surfaces together.

can you glue to bottom of the bed liner, not the bed its self? If not does the adhesive affect the paint after several years

You can glue to the bed liner. There is a surface prep solution that comes with the kit. I don't know about finish damage.

How long after installation do you have to wait before closing and opening tailgate?

If the air temperature will fall below 55°F (13°C) within the next 24 hours or, if applied to a surface other than paint like plastic or a spray on bed liner, then leave tailgate open for 24 hours. When closing tailgate, the flex-fold middle can fold up or down. For all Silverado, Sierra, Frontier, Ford Ranger 2019 and newer, Ford trucks with a hinge retainer bracket and all pickups outside the U.S. market use ROK BLOCK XL (search ASIN: B075PWVW67)

so basically when you have to remove your tailgate youll have to spend another $40 for a new one?

you can re-glue on side back down (keep one side glued down) or you can just leave one side loose after removing your tailgate. You are exactly correct, the ROK BLOCK is not really designed for a situation where you remove your tailgate often. I've found it to be a great addition on my 2019 F150 and happily trade the restriction of easy tailgate removal for the absence of gravel intruding into my tailgate.

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🚚 Seal the gap, own the road—no debris, no drama!

DURABLE ADHESION - 3M ST1200 tape bonds firmly to all surfaces, including spray-on bedliners.
EASY INSTALLATION - Apply in 50°-104°F temps with 25 lbs pressure for a secure, lasting seal.
DUAL FUNCTION SEAL - Doubles as a dust, fume, and water barrier with truck caps or tonneau covers.
UNIVERSAL COMPATIBILITY - Fits most trucks with a 4.25" gap; check exclusions for perfect fit.
SEAMLESS TAILGATE GAP PROTECTION - Eliminates debris buildup, slashing cleanup time and hassle.

The ESI ROK BLOCK Tailgate Gap Cover (4.25" width) is a patented, American-made solution designed to block debris from falling into your truck’s tailgate gap. Featuring durable 3M ST1200 automotive tape, it provides a reliable seal against dust, fumes, and water when paired with truck caps or tonneau covers. Compatible with most trucks except select models, it installs easily under ideal temperature conditions, reducing cleanup time and enhancing your vehicle’s utility and appearance.

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Manufacturer	Extruded Solutions
Brand	ESI
Item Weight	15 ounces
Product Dimensions	62 x 4.25 x 0.12 inches
Item model number	RB-6R
Is Discontinued By Manufacturer	No
Manufacturer Part Number	RB-6R

ESI ROK BLOCK Tailgate Gap Cover 4.25" width

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