A 1-1/4" tub overflow plunger gets stuck on a tapered pipe interior and cannot fully engage with the drain T, requiring a smaller plunger or alternative fix.

Workarounds Described

• uses borescope to inspect pipe interior
• considers ordering a smaller plunger without guarantee

Implied Software Gaps

• App that measures pipe internal geometry from a borescope image and recommends correct plunger size

PlumberFit Advisor

An AI-powered app that uses a smartphone camera or borescope image to measure pipe diameters, identify obstructions, and recommend the correct drain parts (e.g., plunger size, linkage, adapter). It eliminates guesswork and return trips to the hardware store.