Additionally, the construction techniques had improved somewhat since early Bede designs, but fastening the panels still required drilling, deburring, dimpling, drilling again and deburring again for each rivet. With the original mixed-construction design this would not have been as much of a task, but with the all-metal version this was extremely time-consuming. While Bede claimed the aircraft could be put together by anyone in a garage, builders generally agree that doing so without proper construction techniques could result in a potentially dangerous aircraft. One way to overcome that issue is to use a set of properly laid-out jigs to align and drill the pilot holes for the airframe, wings and other components. For all of these reasons, it was some time before completed BD-5s started to appear. Additionally, some of the kits were shipped with missing parts, adding to the confusion. All of this led to a rash of kits being sold for fire sale prices, although this did allow the builders to complete kits at bargain prices. Flying starts Although Bede had suggested using the B wings, the earliest kits shipped only with the short "A" wings. All four examples completed with these wings crashed on their first flight, three on takeoff, one on landing. In three of the four crashes, the pilots were killed. Of the first 25 aircraft completed, with both the "A" and "B" wings, 14 crashed with 9 fatalities. Even when examples with the "B" wings were completed, the safety record did not improve greatly. Several crashes in the BD-5B were found to have taken place due to engine failure on takeoff, both due to the mix of "oddball" engines as well as endemic cooling problems. The reason this is such an issue with the BD-5 is twofold – the high line of thrust means an engine failure immediately results in an unexpected (for most pilots) nose-up attitude change. Pilots who fail to fly the aircraft first and then attempt to restart the engine inevitably stall, with the associated consequences. This was aggravated by the fact the original wing had a very sharp stall with little warning and a nasty tendency to snap roll. To make matters worse, a documented manufacturing error in some wing skins delivered to kit builders exacerbated the problem. A rather small center of gravity range added to the problems of properly trimming the aircraft. Further developments With the demise of