We study top quark Kaluza-Klein (KK) mode mixing in the Randall-Sundrum scenario with all the SM fermions and gauge bosons in the bulk. Even though the simple assumption of universal bulk fermion mass m ψ leads to the same KK mass spectrum for all the SM fermions and thus suppresses new contributions to the flavor changing neutral current and the ρ parameter, large Yukawa coupling of the top quark generates the mixing among its KK modes and breaks the degeneracy: Unacceptably large contribution to ∆ρ occurs. In order to satisfy the ∆ρ constraint, we relax the model by assigning a different bulk fermion mass to SU(2) singlet bottom quark, and demonstrate that there exists some limited parameter space where the ∆ρ constraint is satisfied.It is also shown that the current measurement of Br(B → X s + γ) can be accommodated in this modified model, and one sigma level precision constrains the effective weak scale k EW such as k EW > ∼ 3 TeV for m ψ /k = −0.4, where k EW is the warp-suppressed AdS 5 curvature.