Also physics guide values don't translate to engines Damizean made accurately, pretty sure he made the base for your engine too. So these are values I came up with testing my old version Time Twisted against Sonic 1.
// ---- Character movement ----------------------------------------------------------
// .... Movement values .........................................................
Speed = 0;
TopSpeed = 6.8;
Acceleration = 0.055;
Deceleration = 0.04678;
SlopeFactor = .1;
// .... Gravity values ..........................................................
Gravity = 0;
GravityForce = 0.21875;
// .... Action values ...........................................................
JumpStrength = -6.5;
JumpReleaseStrength = -4;
JumpVariable = true;
SpringVariable = false;
LookUpTimer = 100;
LookUpShiftAmount = -120;
CrouchDownTimer = 100;
CrouchDownShiftAmount = 120;
SkidMiniumAmount = 1.4;
SkidRate = 0.5;
SpindashRev = 0;
SpindashRevCharge = 1;
SpindashRevLose = 0.01;
SpindashMinSpeed = 8;
SpindashMaxSpeed = 12;
RollingDeceleration = 0.018;
RollingBraking = 0.125;
RollingSlopeFactorUp = 0.05 ;
RollingSlopeFactorDown = 0.3125;