Pump well - hose improvement

I have ordered this suction pump for my hobby workshop to pump div. Liquids on the car. The principle is simple, handling well and generally this article does its job well. I have so pumped off excess oil from an engine, the supplied hose fits (at least on a BMW engine) perfectly into the tube of the measuring stick, the suction power is sufficient.

But extremely worthy of criticism is the Absagschlauch: this is so inflexible that the work is already badly affected by the pump. The hose rolls up even after several attempt it from the supplied "roll form" in a straight form always bring back. The tubing wraps over again together, and even very powerful. The tubing is also quite tough and the supplied vacuum stopper (hose clamp made of plastic) has the hose deforms derat already in the delivery condition that an undesirable kink in the tube is present and this significantly hinders the fluidity in the hose itself. Directing the Knicks had so far been unsuccessful.

ps: The collection container is transparent, the selected product images here and there a little deceiving. However, transparency is only for the benefit of, the liquid level in the tank is clearly visible.