I completely agree warhwk
If the rear gear is flimsy and sagging, especially whith those cheap wirery gears, it can be impossible to flare. What happens is as when you touch down your plane know has a positive angle of attack like a tail dragger. This however can't be avoided as a result of the gear. We all know what would happen if we did a 3 point landing on tail dragger with a very tall main gear.

The plane would want to fly back in the air. So we touch down with the front gears first and keep the tail perpindicular to the ground untill we slow down and let the tail come down to the ground. Again, like I said above, a stiff aluminum gear fixed this.