Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works as intended, but...

The product works well and lifts your bikes up as intended, but I have some advice to potential buyers:1) The hooks that lift the bike seat don't securely attach to the seat. If you walk under the bikes, make sure you don't bang or rock it, because it may fall off the hooks. They're more like 90-degree brackets than hooks. Anyway, the directions are clear about not standing/walking under the bikes while hoisted, but these things happen from time-to-time. Especially in places like sheds/garages where things are stored beneath.2) The included screws are junk and they strip easily. Do yourself a favor and use proper 2" wood screws. Consider pre-drilling pilot holes and use washers as well.3) The directions are a tad lacking, and the pictures aren't the greatest either.