Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Harley engine has clear pistons that you cant see!

This took several hours to assemble. After it was completed, I noticed that you can hardly see the pistons and rods because they are clear. It would be so much better if they were painted.Also, the engine is not rotating in the correct direction. The crankshaft rotates counter-clockwise on the real engine not clockwise as in this model. Yes, it does make a difference!After about 10 cycles the engine stoped rotating completely. Now only the sounds work. This could have been a great model, but because of the poor design and lack of paint detail, I would not recommend this product.