hi guys I am now having problems

with my H/L stug 3 infrared version have replaced the old[ rx18] 27mghz ]crystals type] with the H/L 2.4 ghz [second version] with the smoke/ volume switches on the transmitter in place of the 27mghz crystals ,but now everything works except recoil & flash

, do H/L make things difficult for us

so we have to buy more stuff to fix things that go wrong

, I am sure they do ? just to keep up the sale of parts ,tanker 242