
Threshold adjustment quite easy once I took the time to understand how the adjustment rod works. I have this to allow for a gap under my door. It helped but the bottom of my door is obviously quite wobbly and still not perfect. Just note that the adjustment will only effectively raise/lower one or both sides. For example, if you have a curved gap in the middle of your door, you can't adjust it so that it's higher in the middle. All in all, this is a well-made product and definitely worth the money.

Heavy Duty 12Ft Double Sliding Barn Door Hardware Kit - Smooth & Quiet Operation For 36" Wide Doors - J Shape Hanger Black | SMARTSTANDARD.
33 Review

ZEKOO Bypass Sliding Barn Door Hardware Kit For Double Doors, Single Track, Flat Track Roller, One-Piece Rail - Available In 4FT To 12FT Lengths, Perfect For Low Ceilings (6FT Single Track Bypass)
34 Review

π High-Quality Patio Sliding Glass Door Handle Set with 45Β° Mortise Lock - Fits Various Door Thickness, Screw Hole Spacing, & Reversible Design - Non-Handed, Black
33 Review

ZEKOO 6FT Single Track Bypass Barn Door Hardware Kit, Double Sliding Doors Overlapping For Low Ceiling
35 Review

π³ Efficient Drip-less Wood Glue Dispenser, 16 Oz Bottle
8 Review

Pack Of 1 Natural Wood Color 8 Ounce Bottle Gorilla Wood Glue
42 Review

Silver Holographic Stars Glitter Grout Tile Additive 100G - Easy To Use For Tiles, Bathroom, Wet Room & Kitchen
14 Review

Gorilla Waterproof Patch & Seal Liquid - Black 16Oz - Ultimate Solution For Quick Fixes (Pack Of 1)
39 Review